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Reload this Page please help choose drive and driven gear after rear end swap
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Transmissions and Drivetrain Need help with your trans? Problems with your axle?

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Old 08-27-2009, 04:04 PM   #1
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Join Date: Oct 2006
Location: Kiev Ukraine
Posts: 114
Car: Firebird 91
Engine: Vortec 350 224/230cam, ported head
Transmission: TH700r4 with vette servo,hd oil pum
Axle/Gears: now 3.73 posi old 3.23 posi

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please help choose drive and driven gear after rear end swap
I have Firebird 91 i swap 3.23 gear to 3.73 but have problems with speedometer gears, my transmission is new and came to me without gears at all . 700R4 . i found some red drive gear and install it driven gear is dark gray (i think) and when i drive 100 km\h by GPS my speedometer show me 160 km\h i try to calculate teeth on 700r4.com but my english is bad and i dont understand some porameters . can someone tell me what gears should i buy yo see real speed of my car. rear tires is 255/65/15' on 10' rim . thanks
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Old 08-27-2009, 04:14 PM   #2
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Car: '84 Trans Am WS6
Engine: LQ9 w/ Wegner LS6 heads
Transmission: 4L60E, seeking good used NV3550HD
Axle/Gears: 7.5" 3.23:1, posi, swapping to 8.5"

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Re: please help choose drive and driven gear after rear end swap
you need a 15 tooth drive gear, and a 40 tooth driven gear.
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Old 08-27-2009, 04:14 PM
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Reload this Page please help choose drive and driven gear after rear end swap
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700r4, 89, camaro, choose, drive, driven, end, gear, gearing, gen, rear, speedometer, swap, teeth, trans
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